Utility knife



FIG. 1 is a right-side view of a utility knife, embodying aspects of the invention.

FIG. 2 is a left-side view of the utility knife of FIG. 1.

FIG. 3 is a top view of the utility knife of FIG. 1; and,

FIG. 4 is a bottom view of the utility knife of FIG. 1.

The portions of the utility knife shown in broken lines are included for the purpose of illustrating environment and form no part of the claimed design. 

CLAIM I claim the ornamental design for a utility knife, as shown and described. 